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<?xml version="1.0" encoding="utf-8"?>
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<link rel="alternate" lang="fr" xml:lang="fr" title="découper un fichier par mots clés" type="text/html" hreflang="fr" href="/Scratch/fr/blog/2010-02-18-split-a-file-by-keyword/" />
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<link rel="alternate" lang="en" xml:lang="en" title="split a file by keyword" type="text/html" hreflang="en" href="/Scratch/en/blog/2010-02-18-split-a-file-by-keyword/" />
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<div class="return"><a href="#entete">↓ Menu ↓</a></div>
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<a href="/Scratch/en/blog/2010-02-18-split-a-file-by-keyword/" onclick="setLanguage('en')">in English</a>
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découper un fichier par mots clés
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<p>Assez bizarrement, je n’ai trouvé aucun outil UNIX pour découper un fichier par mot clé.
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Alors j’en ai fait un en <code>awk</code>. Je le met ici principalement pour moi, mais ça peut toujours servir à quelqu’un d’autre.
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Le code suivant découpe un fichier pour chacune de ses ligne contenant le mot <code>UTC</code>.</p>
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<div><pre class="twilight">
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<span class="Comment"><span class="Comment">#</span>!/usr/bin/env awk</span>
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<span class="Entity">BEGIN</span>{i=0;}
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<span class="StringRegexp"><span class="StringRegexp">/</span>UTC<span class="StringRegexp">/</span></span> {
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i+=1;
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FIC=<span class="SupportFunction">sprintf</span>(<span class="String"><span class="String">"</span>fic.%03d<span class="String">"</span></span>,i);
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}
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{<span class="SupportFunction">print</span> <span class="Variable"><span class="Variable">$</span>0</span>>>FIC}
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</pre></div>
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<p>En réalité, j’avais besoin de cet outils pour avoir un fichier par jour. Chaque ligne contenant UTC ayant le format suivant :</p>
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<pre class="twilight">
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Mon Dec 7 10:32:30 UTC 2009
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</pre>
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<p>J’en suis finallement arrivé au code suivant :</p>
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<div><pre class="twilight">
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<span class="Comment"><span class="Comment">#</span>!/usr/bin/env awk</span>
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<span class="Entity">BEGIN</span>{i=0;}
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<span class="StringRegexp"><span class="StringRegexp">/</span>UTC<span class="StringRegexp">/</span></span> {
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date=<span class="Variable"><span class="Variable">$</span>1</span><span class="Variable"><span class="Variable">$</span>2</span><span class="Variable"><span class="Variable">$</span>3</span>;
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<span class="Keyword">if</span> ( date != olddate ) {
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olddate=date;
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i+=1;
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FIC=<span class="SupportFunction">sprintf</span>(<span class="String"><span class="String">"</span>fic.%03d<span class="String">"</span></span>,i);
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}
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}
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{<span class="SupportFunction">print</span> <span class="Variable"><span class="Variable">$</span>0</span>>>FIC}
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</pre></div>
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<a href="/Scratch/fr/blog/2010-02-16-All-but-something-regexp--2-/"><span class="nicer">«</span> Tout sauf quelquechose en expression régulière.</a>
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<a href="/Scratch/fr/blog/2010-02-15-All-but-something-regexp/"><span class="nicer">«</span> Expression régulière pour tout sauf quelquechose</a>
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<a href="/Scratch/fr/blog/2010-01-12-antialias-font-in-Firefox-under-Ubuntu/"><span class="nicer">«</span> Fontes adoucies sous Ubuntu Firefox</a>
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articles suivants
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<div class="next_article">
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<a href="/Scratch/fr/blog/2010-02-23-When-regexp-is-not-the-best-solution/">Quand se passer des expressions régulières ? <span class="nicer">»</span></a>
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<a href="/Scratch/fr/blog/2010-03-22-Git-Tips/">Astuces Git <span class="nicer">»</span></a>
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<a href="/Scratch/fr/blog/2010-03-23-Encapsulate-git/">Encapsuler git <span class="nicer">»</span></a>
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<a rel="license" href="http://creativecommons.org/licenses/by-sa/3.0/deed.fr">Droits de reproduction ©, Yann Esposito</a>
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Écrit le : 18/02/2010
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modifié le : 09/05/2010
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